/** * Ajax 请求 */Ext.define("SinoCloudAjaxRequestClass", {    constructor : function () {        var me = this;        var viewport = me.getViewPort();        if(viewport){            window.sinoCloudAjaxRequestClassLoadingMak = new Ext.LoadMask(viewport, {msg:"处理中..."});        }    },    request : function (method,param, url, func,anotherFunc) {  //用于执行ajax请求，其中，func为第一个回调方法，一般用于执行成功提示，可以使用该类的commonPrompt，也可以直接处理成功请求后的业务，anotherFunc用于处理请求成功后执行的业务，可选        var me = this;        me.showViewportLoading();        Ext.Ajax.request({            url: url,            params: param,            method: method,            success: function (response, options) {                me.hideViewportLoading();                if(func){                    func(response, options,anotherFunc);                }else{                    Ext.Msg.alert('error', 'error...did not define ajax callback function...');                }            }, failure: function (response, options) {                me.hideViewportLoading();                Ext.Msg.alert('错误', '系统错误，请稍候再试！');            }        });    },get: function (param, url, func,anotherFunc) {        var me = this;        me.request("get",param,url,func,anotherFunc);    }, post: function (param, url, func,anotherFunc) {        var me = this;        me.request("post",param,url,func,anotherFunc);    },commonPrompt : function (response, options,anotherFunc) {  //一般提示        if(anotherFunc){            anotherFunc(response,options);        }        var text = response.responseText;        if (text) {            text = text.trim();            var json = Ext.decode(text);            var success = json.success;            if (success) {                Ext.Msg.alert('提示', "操作成功！");            } else {                var msg = json.msg;                if(msg){                    Ext.Msg.alert('提示', msg);                }else{                    Ext.Msg.alert('提示', "操作失败！");                }            }        } else {            Ext.Msg.alert('提示', "系统错误...");        }    },getViewPort : function () {        return Ext.getBody();    },showViewportLoading : function () {        if(sinoCloudAjaxRequestClassLoadingMak){            sinoCloudAjaxRequestClassLoadingMak.show();        }    },hideViewportLoading : function () {        if(sinoCloudAjaxRequestClassLoadingMak){            sinoCloudAjaxRequestClassLoadingMak.hide();        }    }});

 

 

使用方式 ： 

var ajax = Ext.create("SinoCloudAjaxRequestClass");var param = {     id : 1};var url = "demo.action";;ajax.post(param,url,function(response, options){});或者 ： ajax.post(param,url,ajax.commonPrompt,function(response, options){});ajax.commonPrompt 会自动验证返回的json的success并给出提示